Stapling machine



NOV. 13, 1951 GQLDENBERG 2,574,697

STAPLING MACHINE Filed Nov. 16, 1949 4 Sheets-Sheet 1 INVENTOR ABRAHAM GOLDENBERG,

V BY V 1M WW ATTORNEY Nov. 13, 1951 A. GOLDENBERG 2,574,597

STAPLING MACHINE Filed Nov. 16, 1949 4 Sheets-Sheet 2 umnmm-uunm --r|r---- I" 7 i g u I5 25 I9 I8 MW [Irma n I |l| INVENTOR ABRAHAM GOLDENBER G,

ATTORNEY 1951 A. GOLDENBERG 2,574,697

STAPLING MACHINE Filed Nov. 16, 1949 4 Sheets-Sheet :5

FIG.|O. FIGJI.

F|G.|4'. INVENTOR ABRAHAM GOLDENBERG, j

ATTORNEY Nov. 13, 1951 A. GOLDENBERG 2,574,697

STAPLING MACHINE Filed Nov. 16, 1949 4 Sheets-Sheet 4 INVENTOR ABRAHAM GOLDENBERG,

0L1.- I ATTORNEY Patented Nov. 13, 1951 UNITED STATES PATENT OFFICE I2,5v4,s9 7= f HW AQHi' EF Abraham Golde'nberg, l3rooklyn, N. Y. Application November 16, leie s rial hi 127,719

I This invention relates to stapling machines for stitching or stapling together sheets of paper'or similar material and has particular reference to such a machine constructed of a minimum number of parts which are held together, in operable order, by means of removable locking pins. 7

An object of this invention is to provide a stapling machine of the character described comprising parts which may be cut from a single piece of material and then pressed and formed into the'required shape.

Another object of this invention is the pro-- vision of a stapling machine of the character described, wherein the principal parts of the machine are assembled and held together, in operative arrangement, by means of pins which may be readily removed to disassemble the parts, to efiectjreplacements or repairs.

A further object of this invention, is'to provide a stapling machine of the character described, wherein means are provided to dislodge or discharge from the machine, staples which may become deformed and useless, and prevent jam-'- ming the working parts.

A still further object of this invention is the provision of a stapling machine, of the character described, wherein the principal parts of the machine are specially designed to permit die cutting same from single pieces of material and forming same to the required finished shape.

A still further object of this invention 'is the provision of an organization in which the constituent elements are so arranged structurallyand functionally as to assure improved results with materials and members which may be main! ufactured at reasonable cost, may be easily asandnot as limiting because obviously the inven tion is capable of other embodiments having revised details of construction, so long as they fall within the ambit of the appended claims.

'The invention itself, however, both as to its organization and its method of operation, will best be understood from the followingde'scription of a specific embodiment when read inconnection with the accompanying drawings,

which:

Fig. 1 is an exploded perspective view of the;

machine, with a part broken away. a

I Fig. 2 is an elevational view of apart of the machine looking in the 'directionindicated the arrow A of Fig. 1'.

3 Claims. (011m 2 ;Fig.' 3 is an elevational view of another part of the machine'looking in the direction indicated by the arrow A of Fig. 1.

'Fig. "4 is an elevational view of still another part of the machine looking in the direction inclicated by the arrow A" of Fig. 1.

same, taken along line ll-li of Fig. sho'wsthe rear end of the pivotal member at- Fig.5" is a fragmentary detail, in elevation, of onejend of the staple holding bar of the apparatus, and shows parts in section. Fig. 6 is a similar view butshowing a deformed staple about to be' dropped or discarded. Fig. '7 is a plan view of the bottom portion of same.

Fig. '8 Ban elevational side view of the assembled" stapling machine.

'-Fig. 9 is a plan view of same.

"Fig. 10 is a front elevational view of the stapling-end of the machine.

Fig.f1 1 is an elevational view of the opposite or rear end of the machine.

Fig. 12 is a sectional elevational view of the stapling end of the machine and is taken along the line l2-I2 of Fig. 9.

Fig. 13 is an=enlarged sectional plan view taken along the line l3l3 of Fig. 12, looking in the direction indicated by the arrows.

Fig. 14 is a sectional elevational view taken along the line M-M of Fig. 13 showing a part ofthe forward portion of the machine, with a part broken away.

Fig. 15 is a fragmentary detailshowing a plan view of the rear end of the base member of the machine"; a pivotal upper part of apparatus being removed. Fig. 16' is a transverse section, in elevation, of same, taken along line Iii-l6 of Fig. 15; and Fig. 17 is a longitudinal sectional view of 15 and tached.

Referringin detail to the parts, ll designatesabase'm'e'mber-having a slightly depressed por tion at its rear end forming a shelf [2 to which nected to'the cheek pieces 13. A removable pin [-6 (shown in Figs. 8, 9, 10 and 11), engages through the perforations l4 and H and pivotally ties the channeled bar 1 5 to the base member I I. The rear end of the base member is further formed "with a cut out portion or slot ll extending inwardly and slightly beyond the perfor-- ationjs- I4 formed in-the cheek pieces l3, and provides; a passage for the said pivotally connected channeled b'arfli'when same is turned about its a pivtal-cenne'etion at -I'B" to a point approximately 180 with the base member, in which position the apparatus may be used for tacking purposes (see Figs. 15, 16 and 17). A tight or snug frictional contact between the sides of the bar 15 and the walls of the opening II will hold same in its extended position. A fiat or leaf spring [9 is secured to the base H and engages beneath the channeled bar 15 to urge same to its normal position as shown in Fig. 8. The side-walls 20 of the channeled bar l (Fig. 14) are-formed with inwardly extending flanges 2| to form a slot 22 extending the full length of the channeled bar l5;

An inner channeled member 23 is secured. to. the channeled bar between the walls 'thereof and functions as a runway or guidEfDlEfl-fifilfilk ber 0r staple guide 23 and is urged forward:

against the strip of staples 24 and feeds same toward the stapling end of the machine. Ahook or attachment member ZB-issecured to-thestaple pusher 25 and receives a loop 21' secured to; theouter or free end of a coiled spring 28; mounted within a housing 29 secured upon the channeled bar 15 near the stapling end ofsame; The-housing, 29. is formed with two side walls 30 and a front wall 3| and is welded or otherwise secured to the channeled bar 5. The front wall 3| of the housing 29 is formed with cut andpressed out lugs 32. which engage in a slot 33 formed. upon hollow plungerelement 34. The plunger 34 slidably engages against the front wall 3t of the housing 29 and is formed with afront. wall 35, side walls 36 and a rear wall 37 in whichthe slot 33 is formed (Figs. 1 and,4). The rear. wall 3'! of the hollow plunger 34 has slidable contact with the front wall, 3! of the housing 29. and the front wall '35 of thehollow plunger. 34-. lines up flush with the front end 38. of the channeled bar I5 (Figs. landl2) The hollow plunger 34 is further-providedzwith a topformed by the turned in upper ends 3.9: of the sides 36. The top formation extends rearwardly beyond the rear wall 31 to form an offset 40 which, coacting with the-top, of the housing '29, limits the downward movement; of: the hollow plunger 34. Threaded perforations 41; are provided in the top as in which; screws; 42 en.- gage to hold in place a pressing knob-43:(Fig-..12). A. spring 44 is housed within the, hollow plunger 34, has: contact with the top 33- of; the; hollow; plunger 34 and seats upon, a block or plate: 4 5' which in turn rests upon the flanges: 2;| formed upon the side walls, 20 of the channeled, bar 15-. The plate 4.5 is formed with a; cut and pressed; out lugv 46 which receives the lower end; of: the; spring 44 (Figs. 1, 12 and 13).

A staple driver blade 41 is securely; fastened to the front wall 35 of the hollow plunger-3,4, by means of a rivet 48 or by any other suitable method. The lower end of the staple; driver-blade, 41 extends below the lower end of the: hollowplunger 34 a distance sufficient to bring; thelower; end of the staple driver blade 41 to a, point. just. above the top of a staple aligned beneath; the; staple driver blade when the hollow plunger 34 is in its normally raised position as: illustrated: inFig. 12.

An outer shell or casing: 49, open at its. front end 50 and formed with a rear end 5| partlyopen. as at: 52, (Figs. 2 and 1e) fits snug y Over; the; housing 29 and the stapling, end of the machine and extends downwardly to lower edge of. the channeled bar 15 and forwardly to the frontend. of thechanneledbar i5, as;shownin;lliig 12,,and

by the broken projection lines in Fig. 1. In this position, detachable pins 53, which engage through perforations 54* in the outer casing 49 and coinciding perforations 55 in the housing 29, hold the outer casing 49 securely in place. The hollow plunger 34 and its spring 44 may rest in its designated position but may be readily removed. The outer casing 49 is formed with pressed out beads 56 extending vertically upon the sides, near the front ends thereof.

A front sliding closure member 51, having a front wall 58, sides 59 and open at the rear, is formed upon its sides 59 with pressed out beads forming grooves 63 which conform to and coincide-with the outer surface of the beads 56 upon the outer casing 49. With the hollow plunger 34 and its enclosed spring 44 in position, the closure member 5! slides over the outer casing and securely holds in place the reciprocally movable hollow plunger 34 (Fig. 8). Upon the inside of the front wall 58 (Figs 2 and 13) of the slidable closure member 5'!v there is formed a, recess or groove 10 which provides a track or guide way for the staple driver 57 and a groove ll, extending part way down the inside of the front. wall provides a clearance for the head of the rivet 48. which secures the staple driver 41 to the hollow. plunger 34.

An anvil plate or disk Si is provided and rests in a recess 62 wherein it is held by the urge of a. spring 63; engaging around a pin t4 secured to the anvil plate iii. The spring engages. between the head 65 and the bottom 66 of the recessed portion fizthrough which the pin 64 freely passes. 0116201" more indentations or depressions 6,1 and 6.81am formed in the anvil plate 6| which may be pushed upwardly against the urge of the spring '63 and turned to align the desired. indentation with the driver blade depending upon the staple leg-deformation desired (Fig. 12)

I-f due to wear or for any other reason, a sec end-staple leaves the stack when the staple blade is brought down (Figs. 5 and 6) the secondstaple will be forced rear-wardly in the machine, fall into staple discharging slots 69 and drop from; the stapling machine thereby preventing; the Jamming of the machine.

To. remove the sliding closuremember 57; the pressing knob 4.3 must first be removed or when. thechanneled bar I5 is elevated about itspivotal connectionto-clear the base I I, the sliding closure member may he slid off toward the bottom.

To disassemble the machine the pins 53 engag;

. ing through theouter casing 49v and the housing 29. at, the stapling end and the pin; 18, at therearpivoting end may be easily withdrawn.

Due to constant use of the machine, the contacting; surfaces. of the slidable closure member 51 and the casing 49 may wear and: thereby re duce the frictional. contact between the opposing surfaces and prevent the proper positioning; of the, closure member. When this occurs the fric tionalcontact may be increased by bending and spreading apart the open ends 50 0fthe casing 43- of by. contractingor bending together the-open ends of the slidable closure member 57.

I- claim:

1.. In a stapling machine of the character described the combination of a housing having; front and side walls secured to the stapling; machine lugs formed upon and extending outwardly from the front wall of said housing, a hollow plunger slidably engageable against the front wall of said housing and formed with a longitudinal slot adapted to engage the: said; lugs upon" the front wall of the said housing, a spring within said hollow plunger to urge same upwardly, a staple driver secured upon said plunger, an outer shell having open front ends, slidably engageable over said housing, removable pins engageable through said outer shell and housing to lock same together, and a closure member slidably engageable over the open front ends of the said outer shell and adapted to hold the said plunger in position.

2. In a stapling machine of the characer described and as set forth in claim 1, wherein the outer casing is formed with pressed out guide beads and the closure member is formed with pressed out grooves coinciding with and engaging over the beads upon the outer casing.

3. In a stapling machine of the character de- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,066,157 Pankonin Dec. 29, 1936 2,228,778 Pankonin Jan. 14, 1941 2,251,833 Polzer Aug. 5, 1941 

